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Changes of State

Chapter 3 Section 2 Physical Science

Melting A change in state from a solid to a liquid.
Melting Point The specific temperature that melting occurs.
Freezing The change of state from liquid to solid.
Vaporization The change from a liquid to a gas.
Evaporation Vaporization that takes place only on the surface of a liquid.
Boiling When a liquid changes to a gas below its surface as well as at surface.
Boiling Point The temperature at which a liquid boils.
Condensation When particles in a gas lose enough thermal energy to form a liquid.
Sublimation The surface particles of a solid gain enough energy that they form a gas.
What happens to the particles of a liquid as they lose more and more energy? The particles move more and more slowly.
How do clouds typically form? Water vapor in the atmosphere condense into liquid droplets.
What physical state is skipped during the sublimation of a substance? The liquid state is skipped.
What happens to the particles of a solid as it becomes a liquid? The particles break free from their fixed positions.
How melts?does the thermal energy of solid water change as it The thermal energy increases.
What process occurs as pieces of dry ice gradually get smaller? The process of sublimation.
Created by: Tom Radeke